06.00.00 Agricultural sciences
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DETERMINATION OF OPTIMAL SEEDING RATES OF DIFFERENT VARIETIES OF WINTER TRITICALE
06.00.00 Agricultural sciences
Description
The results of experiments on defining the optimum seeding rate of different varieties of winter triticale are reviewed in this article. The influence seeding rate on yield and grain quality of winter triticale has been investigated
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06.00.00 Agricultural sciences
Description
It has been proved, that by means of information technologies, it is possible to fix the wind erosion operatively, to determine the sizes of soil losses. The mathematical model of process of the wind erosion during the winter period is created
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DEFINITION OF THE RATIONAL PARITIES OF IRRIGATED AND DRYLAND FARMLAND ON AGROLANDSCAPES
06.00.00 Agricultural sciences
Description
The design procedure of a parity irrigated and dryland shares of farmland on various types of agrolandscapes, which develops from a recommended parity of environment formatting and environment destroying grounds, providing protection of soils from erosion and supporting their fertility at certain level is resulted in article
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06.00.00 Agricultural sciences
Description
Numerous studies have found a different quality of the buds along the length of the fruit arms, which expressed various degrees establishing embryonic inflorescences in the central buds. It is revealed that many of the grapes have more fruit-bearing eyes formed on average (4-6 knots) and upper (7 to 10 knots) levels of fruit escape, compared to the lower (1-3 nodes) layer. In connection with the different quality of the buds along the length of fruit vines should be used and different ways of cutting them. It is necessary to consider the biological characteristics of varieties, ways of doing and shaping the bushes, the weather conditions of the area during the growing season and relative calm. To receive annually a stable high yield of grapes, we must first set the optimal length of pruning fruit shoots and optimal load on the Bush healthy eyes. This requires for each class on the eve of trimming bushes to carry out the analysis of the wintering holes along the length of the fruit shoots and to identify the embryonic fruitfulness of Central buds, i.e. to carry out the prediction of grape yield next year. The article presents data on the formation of the embryonic fruitfulness of Central buds of wintering buds at the Taman group of grapes – Arcadia, Viorica, Hibernal, Cabernet Sauvignon, Merlot, Moldova, Pinot white, Riesling, Saperavi, Traminer pink, Tsimlyansky black, Chardonnay. Found higher rates of embryonic fruitfulness of Central buds buds in the studied grape varieties - Chardonnay, Riesling, Viorica, Hibernal, Merlot, Moldova, where the coefficients of fruiting ranged from 1.40 m from Riesling to 1.69 from Merlot; factor productivity of 1.58 from the Chardonnay to 1.77 from Merlo. The high percentage of fruitful buds from 80,8 from Cabernet Sauvignon to 95.6 in the cultivars Merlot and Chardonnay. A higher percentage of eyes with 2 embryonic buds in the cultivars Merlot and Viorica who have this indicator amounted to, respectively: 75,6 and 70.6%. Forecasting a crop of grapes next year to trim the bushes on the proposed method will provide a full crop of grapes
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OPTIMIZATION OF DESIGN OF PLANTINGS OF APPLE-TREE VARIETIES IMMUNE TO SCAB IN INTENSIVE GARDENS
06.00.00 Agricultural sciences
Description
The article presents growth rates, formation of the fruit of the entities and the fruits of apple varieties of “Florina”, “Zolotoy potok” depending on the strength of growth stocks and planting schemes
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OPTIMIZATION OF THE PROCESS OF DELIVERY OF MINERAL FERTILIZERS TO AGRICULTURAL CONSUMERS
06.00.00 Agricultural sciences
Description
The method of optimization of the process of delivery of the mineral fertilizers to agricultural consumers are given on an example of farms of Egorlyk district of the Rostov region
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06.00.00 Agricultural sciences
Description
Nutrient media for shoot development from shoot tips 0.5-0.8 mm with several leaf primordia in four grapevine genotypes were optimized by means of a mathematical design of experiment. Over the range of component concentrations CaCl2 had considerable the highest effect on shoot tip development compared to other components of the media. Grapevine genotypes were different in their needs for concentrations of macro-elements to optimize the process of their growth and development. Shoot development from shoot tips in each grapevine genotype as a function of macro-element concentrations in media must be described by an individual regression equation. The proposed method of result evaluation and the mathematical design of experiment may be used in physiological and agricultural research for optimization of processes affected by numerous factors. The optimized media for shoot tip development may by used for sanitation of grape plants from viruses in meristem cultures
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06.00.00 Agricultural sciences
Description
Two methods were developed, one to assess experimental results by reducing a number of developmental parameters to the overall quality, leading to the overall quality criterion, and the other to optimize processes affected by numerous interacting factors, in-vitro plant development in this case, by applying a mathematical design of experiment. Single-bud cuttings with one leaf of two Vitis vinifera L. genotypes were excised from the central part of two-month-old in-vitro grown plants and used as explants. The explants were established on bridges of filtering paper in liquid media and on solid media. Eighteen modifications of these media contained five macro-elements, each at three concentrations, and the distribution of these macro-element concentrations followed the law of random numbers (Experiment I). Parameters characterizing arm, leaf and root development of two-month-old plants of each study genotype established on each liquid or solid medium were reduced to the overall quality of plant development. Since the study genotypes differed in the ability to grow on liquid and solid media with different macro-element concentrations and also in the ability to utilize these macro-elements, the dependence of in-vitro plant development on macro-element concentrations was described by different regression equations. That is why the regression equation describing the average outcome of plant development in the two genotypes on liquid and solid media was not as significant and the description of the process was not as adequate (determined) as regression equations calculated for each process. The regression equation which describes the dependence of the average outcome of plant development on macro-element concentrations in Experiment I is as follows: y5 = 0.027 + 0.116x22 + 0.109x2x4 + 0.106x2x3 + 0.114x4. Stepwise calculation of macro-element concentrations to optimize in-vitro plant development was done based on macro-element concentrations of the initial medium of Experiment I as starting points since that medium was best efficient for this purpose by using regression equation (y5) and algorithms of multiple curvilinear stepwise regression according to the Box-Wilson method of steepest ascent. Experiment II was undertaken where macro-element concentrations (‘steps’) were calculated in a stepwise manner to optimize in-vitro plant development of the two V. vinifera genotypes and the rootstock ‘Kober 5BB’. This led to a liquid medium and a solid one which enabled a better plant development in the three genotypes relative to the use of controls: media with ½ MS macro-elements and the initial medium whose macro-element concentrations entered as starting points to calculate ‘steps’ for optimization of in-vitro plant development. The optimized medium contained macro-elements: 318 mg l-1 NH4NO3 (x1), 1188 mg l-1 KNO3 (x2), 370 mg l-1 MgSO4 7H20 (x3) (MS), 370 mg l-1 KH2PO4 (x4), 331 mg l-1 CaCl2 (x5) (MS), and other substances at optimum concentrations adjusted earlier: ¼ MS Fe-EDTA, ¼ MS micro-elements, 20 mg l-1 myo-inositol, 0.1 mg l-1 thiamine (MS), 0.5 mg l-1 nicotinic acid (MS), 0.2 mg l-1 pyridoxine, 2 mg l-1 glycine (MS), 0.1 mg l-1 indole-3-acetic acid, 10 g l-1 sucrose and, only for solid media, 7 g l-1 Difco agar. The optimized medium may be used for propagation of virus-free plants, valuable clones and grapevine genotypes created by gene engineering. The mathematical design of experiment reported in this paper which enables stepwise optimization of in-vitro plant development may be used both in agriculture and in the food industry
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06.00.00 Agricultural sciences
Description
Alternation of crops, will remain a fundamental element of zonal technologies of their cultivation for a long time. Application of methods of mathematical model operation will allow to come to new level in the solution of the questions of effective use of an arable land, through application of models optimizing it. Results of researches which basis data of long-term observations are will be especially valuable. They used data of the long-lived stationary experiments on studying of alternation of crops in crop rotations of last more than five rotation. Stationary experiences are located in a forest-steppe zone of Western Siberia on the fields FGBNU "SIBNIISKH". The purpose of researches consisted in optimization of use of an arable land at application of methods of mathematical model operation for preservation of soil fertility. The model allowing when performing particular conditions is given in work (balance of a humus, work expense, a metabolic cost, etc.) to optimize use of an arable land against the background of preservation of soil fertility of the soil, receiving production, economic and power efficiency. It is shown that at alternation of grain crops with clear steam, formation of a harvest happens due to natural fertility of the soil what the negative balance of a humus which reaches 0,18 – 0,78 tons from hectare testifies to. At alternation of field cultures without clear steam the harvest was formed against the background of reproduction of organic matter of the soil, due to increase in vegetable oddments from use of fertilizers, the balance of a humus was positive – 0,15 – 0,28 tons from hectare. Use along with clear steam, busy steam, colza on green fertilizer, and also straw as organic fertilizer for grain crops, 2,01 tons from hectare of commodity grain were received, at a share of clear steam – 16,8%, busy steam – 11%, summer grain – 72,2% of arable land. Increasing in crop rotations of West Siberian Square with use as organic fertilizer of straw, busy vapors and green fertilizers, it is possible to achieve reproduction of fertility of the soil with some decrease in an exit of commodity grain to 2 tons from hectare
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OPTIMIZATION TECHNIQUES FOR PCRRFLP FOR GENOTYPING SHEEP
06.00.00 Agricultural sciences
Description
Diagnosis by PCR-RFLP (polymerase chain reaction – polymorphism of the lengths of restriction fragments) is the standard analysis of point mutations for the diagnosis of allelic polymorphism of candidate genes related with productive qualities of farm animals. Along the length of the fragments (RFLP) make a conclusion about the absence or presence of the point mutation, and homozygosity or heterozygosity of the individual. The aim of our work was the optimization of protocols for conducting PCR-RFLP analysis for genotyping sheep for genes of the growth hormone gene differential growth factor and gene of calpastatin
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